Prevalences of periodic limb movement‐like and restless legs‐like symptoms among Japanese adults

Kageyama, Takayuki; Kabuto, Michinori; Nitta, Hiroshi; Kurokawa, Yoshika; Taira, Keisuke; Suzuki, Shosuke; Takemoto, Tai‐ichiro

doi:10.1046/j.1440-1819.2000.00685.x

Cited by 70 publications

(53 citation statements)

References 4 publications

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“…We selected 30 studies on the RLS prevalence in Asian populations based on predefined criteria [12][13][14][15][16][17][18][19][20][21][22][23][24][25][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51]. Table 5 and Figure 1 summarize the 31 studies (including ours).…”

Section: Rls Prevalence In the Published Literaturementioning

confidence: 99%

“…Table 5 and Figure 1 summarize the 31 studies (including ours). In the 3 studies that defined RLS according to the presence of a key symptom, the prevalence was relatively high, ranging from 5 to 12.1% [19,36,37]. In the 6 studies in which set-of-symptoms criteria using a questionnaire were adopted, the RLS prevalence ranged from 4.5 to 9.7% [22-25, 38, 39].…”

Section: Rls Prevalence In the Published Literaturementioning

confidence: 99%

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Prevalence and Characteristics of Restless Legs Syndrome in Korean Adults: A Study in Two Independent Samples of the General Population

Kim¹,

Yoon²,

Park³

et al. 2019

Neuroepidemiology

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Background: Restless legs syndrome (RLS) is a common sleep disorder, although it has a low prevalence in Asian populations. However, the reported RLS prevalence in Korean adults is mostly 4.5–12.1%, which is higher than that reported in other Asian populations. This study aimed to diagnose RLS and exclude mimicking conditions in 2 independent samples of Korean adults, and to compare its prevalence to that from previous studies performed in Asian countries. Methods: Study populations included a (1) nationwide stratified random sample (n = 2,824; age 19–79 years) and (2) community-based cohort (n = 2,685; age 47–79 years). We applied the Cambridge-Hopkins diagnostic questionnaire to diagnose RLS and differentiate it from RLS mimics. Sleep-related symptoms, mood, and medical conditions were compared between the RLS and non-RLS groups. Prior studies of the RLS prevalence in Asia were systematically reviewed and compared to our findings. Results: The adjusted RLS prevalence was 0.4 and 1.3% in populations 1 and 2, respectively. In both populations, subjects with RLS had more depression. The prevalence of RLS mimics was 5.1 and 2.6%, in populations 1 and 2, respectively. The RLS prevalence in Asia was higher when RLS was defined by the presence of essential clinical features and lower when a differential diagnosis was additionally implemented. Conclusions: The RLS prevalence in Korean adults considering RLS mimics is comparable to that in adults from other Asian countries (< 2%). The reported RLS prevalence varies depending on the diagnostic method employed.

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Section: Rls Prevalence In the Published Literaturementioning

confidence: 99%

Section: Rls Prevalence In the Published Literaturementioning

confidence: 99%

Prevalence and Characteristics of Restless Legs Syndrome in Korean Adults: A Study in Two Independent Samples of the General Population

Kim¹,

Yoon²,

Park³

et al. 2019

Neuroepidemiology

View full text Add to dashboard Cite

show abstract

“…[3][4][5][6][7][8] RLS is either idiopathic or it occurs in association with many physical and mental conditions. [9][10][11][12] The severity varies widely, ranging from occurring only occasionally to frequently and severely with disruption of sleep.…”

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confidence: 99%

Restless legs symptoms with sleepiness in relation to mortality: 20‐year follow‐up study of a middle‐aged Swedish population

Mallon

Broman

Hetta

2008

Psychiatry Clin Neurosci

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Aim:The aim of the present study was to investigate restless legs symptoms with concomitant daytime sleepiness as a risk factor for mortality in a middleaged population.Methods: A cohort of 5102 subjects aged 30-65 years in mid-Sweden who responded to a postal questionnaire in 1983 was followed up. The questionnaire included questions about restless legs symptoms, daytime sleepiness, demographic and lifestyle variables, sleep habits, medical conditions and depression. Mortality data for the period 1983-2003 were collected and death certificates were available for all the 657 responders who died during the follow-up period.Results: Restless legs symptoms with daytime sleepiness was reported by 10.3% and was associated with shorter night sleep time, several health problems and depression. During the follow-up period 379 men (21.6%) and 278 women (15.5%) died. A multivariate model adjusted for age, short night sleep time, lifestyle factors, medical conditions and depression showed that women reporting restless legs symptoms with daytime sleepiness had an excess mortality compared to women without restless legs symptoms and daytime sleepiness (hazard ratios, 1.85; 95% confidence interval, 1.20-2.85; P = 0.005). No influence on mortality risk was found in men reporting restless legs symptoms with daytime sleepiness. Conclusions:The occurrence of restless legs symptoms with daytime sleepiness in middle-aged women is associated with increased mortality risk.

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“…1 Surveys of the general population have shown that RLS is a common disorder, and has a prevalence ranging between 2.5 and 10%. 2 Standardized criteria were proposed by the International Restless Legs Study Group (IRLSSG) in 1995 3 and these were slightly modified in 2003 4 when a four-question set recommended for epidemiological surveys also was presented.…”

mentioning

confidence: 99%

Restless legs syndrome and its relationship with insomnia symptoms and daytime distress: Epidemiological survey in Sweden

Broman

Mallon

Hetta

2008

Psychiatry Clin Neurosci

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To investigate prevalence estimates of restless legs syndrome (RLS) in relation to insomnia complaints and daytime distress a questionnaire was sent to a randomly selected sample of 1962 inhabitants of Uppsala, Sweden. The questionnaire included questions about sleep and daytime distress and the standardized four-question set for epidemiological settings recommended by the International RLS Study Group. A positive diagnosis of RLS was established in 18.8% of all responders. When the optional question about frequency was applied 5.8% reported frequent symptoms. Insomnia symptoms and daytime distress were significantly associated with the frequency of RLS symptoms.Key words: anxiety, depression, insomnia, prevalence, restless legs syndrome. R ESTLESS LEGS SYNDROME (RLS) is a sensorimotor disorder characterized by an almost irresistible urge to move the legs that may cause considerable sleep disruption and insomnia complaints.1 Surveys of the general population have shown that RLS is a common disorder, and has a prevalence ranging between 2.5 and 10%. when a four-question set recommended for epidemiological surveys also was presented. The first three questions were built upon those validated by Rothdach et al. 5 and a positive diagnosis requires affirmative answers to each of these three questions. The fourth, optional question was designed as a convenient measure of severity and had seven response categories.The proposed four-question set does not yet seem to have been used in epidemiological surveys in the normal population. Therefore, the aims of the present study were (i) to estimate the prevalence of RLS according to the proposed four-question set; and (ii) to further investigate the frequency of RLS symptoms, and the relationship between frequency of RLS symptoms and sleep disruption and daytime distress. METHODSA questionnaire was sent out by post to a randomly selected sample of 1962 subjects aged 20-59 years living in Uppsala Municipality. Approximately every 50th person was drawn from the national registration records. Responses were obtained from 586 men and 749 women, with mean (ϮSD) ages of 39 Ϯ 12 years and 38 Ϯ 11 years, respectively.The questionnaire consisted of items from the Uppsala Sleep Inventory. 6 The four-question set recommended for use in epidemiological settings by the IRLSSG 3 was also included. These questions had been translated into Swedish by a professional translator, discussed in an expert group, and adequately

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Prevalences of periodic limb movement‐like and restless legs‐like symptoms among Japanese adults

Abstract: Prevalences of periodic limb movement-like and restless legs-like symptoms among Japanese adults were investigated. The latter symptom was significantly associated with insomnia.

Cited by 70 publications

References 4 publications

Prevalence and Characteristics of Restless Legs Syndrome in Korean Adults: A Study in Two Independent Samples of the General Population

Prevalence and Characteristics of Restless Legs Syndrome in Korean Adults: A Study in Two Independent Samples of the General Population

Restless legs symptoms with sleepiness in relation to mortality: 20‐year follow‐up study of a middle‐aged Swedish population

Restless legs syndrome and its relationship with insomnia symptoms and daytime distress: Epidemiological survey in Sweden

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